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JulijaS [17]
3 years ago
8

When electrons of a chlorophyll molecule are raised to a higher energy level, Select one: a. they become a photon of light. b. t

hey form a glucose bond. c. they enter an electron transport chain. d. carotenoids are converted to chlorophyll.
Biology
1 answer:
Sophie [7]3 years ago
7 0

Answer:

c. they enter an electron transport chain.

Explanation:

The chlorophyll in leaves of   plants undergoing photosynthesis is made up of two pigments ; these are  the primary pigments and the accessory pigments. The latter are arranged around the primary pigments.  These two pigments are arranged in chlorophyll  to form photo systems i and ii. The photosystems   serves as the reaction centers of chloroplast. <u>Basically the accessory pigment absorbs  photons of energy and sends this to the  primary pigments.</u>

When photons of light is absorbed by the chlorophyll of the leaf. The electrons  in the chlorophyll  are excited, and  therefore move to higher energy levels. At this stage they are  said to be  activated.  This process is called Photoactivation.

However, instead of the excited electrons to return to the  photo- systems  so that the acquired energy is lost as heat to the surroundings,  these electrons are  trapped by electron acceptors and  are passed to the electron transport chains. These chains of electrons generate proton motive force PMF, for  pumping protons across the thylakoid membranes , down into the thylakoid for  the synthesis of  ATPs by ATPase synthase; through Chemiosmosis.

The ATP is needed in Calvin's Cycle for Carbohydrates synthesis.

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When you are injured and bleeding the clotting factors immediately start to clot and try to seal the wound. This would be an exa
Juliette [100K]

Explanation:

This would be an example of secondary homeostasis

During wound healing, which happens after bleeding from a cut, the homeostatic response is clotting; primary homeostasis involves the formation of a platelet plug at the site, from platelets within the blood

Fibrinogen and platelets form a clot, in order to prevent blood loss and infection.  Fibrin is formed through the activation of coagulation factors which stabilise the plug.

Further Explanation:

The nervous system is subdivided into; the central nervous system (CNS), which includes the brain and spinal cord, within the vertebral column; and the peripheral nervous system, which includes nerves that branch into the rest of the body from the brain and spinal cord. Nervous tissue responds to electrical impulses, allowing for communication between different regions of the body.

The peripheral nervous system is further divided into the somatic nervous system responsible for carrying out sensory and motor information between the peripheral nervous system- including sensory organs like the eyes; and central nervous system; and the autonomic nervous system (ANS) which regulates involuntary bodily functions like heartbeat, breathing and blood flow. The ANS is mainly acts unconsciously and affects smooth muscle and internal organs. It is related to homeostasis- where the body maintains a constant internal balance in pH, temperature, blood pressure etc.

During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

7 0
3 years ago
Why are gametes made through meiosis, rather than mitosis?
Valentin [98]
This is because meiosis <span>produces spores that are used for reproduction and can form similar copies to </span><span>the parent cell.</span>
6 0
3 years ago
Plant embryos __________. a. rely on protection and resources supplied from the maternal plant. b. result from fertilization ext
Roman55 [17]

Answer:

A) rely on protection and resources supplied from the maternal plant.

Explanation:

The embryo is a structure formed after the fusion of the male gamete and female gamete. A diploid zygote is formed after cellular division forms the embryo in the female gametophyte and therefore is considered the diploid tissue.

The embryo requires the nutrients for growth and absorb them from the surrounding female gametophyte structure like endosperm in the angiosperm. The embryos grow and form the sporophytic structure.

Thus, Option-A is correct.

5 0
3 years ago
Which Organisms are humans most closely related to? Which organisms are humans most closely related to?
LekaFEV [45]

Answer:

monkeys

Explanation:

7 0
2 years ago
What substance ,produce during photosynthesis ,provides food for plants and animals in a food web?
Leto [7]
I think the answer is glucose
6 0
2 years ago
Read 2 more answers
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